dlls/kernel/file16.c

   1 /*
   2  * File handling functions
   3  *
   4  * Copyright 1993 John Burton
   5  * Copyright 1996 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * TODO:
  22  *    Fix the CopyFileEx methods to implement the "extended" functionality.
  23  *    Right now, they simply call the CopyFile method.
  24  */
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <stdio.h>
  30 #include <assert.h>
  31
  32 #define NONAMELESSUNION
  33 #define NONAMELESSSTRUCT
  34 #include "winerror.h"
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "winternl.h"
  38 #include "wine/winbase16.h"
  39 #include "wine/server.h"
  40
  41 #include "msdos.h"
  42 #include "kernel_private.h"
  43
  44 #include "wine/unicode.h"
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(file);
  48
  49 /***********************************************************************
  50  *           _hread16   (KERNEL.349)
  51  */
  52 LONG WINAPI _hread16( HFILE16 hFile, LPVOID buffer, LONG count)
  53 {
  54     return _lread( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, count );
  55 }
  56
  57
  58 /***********************************************************************
  59  *           _hwrite   (KERNEL.350)
  60  */
  61 LONG WINAPI _hwrite16( HFILE16 hFile, LPCSTR buffer, LONG count )
  62 {
  63     return _hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, count );
  64 }
  65
  66
  67 /***********************************************************************
  68  *           _lcreat   (KERNEL.83)
  69  */
  70 HFILE16 WINAPI _lcreat16( LPCSTR path, INT16 attr )
  71 {
  72     return Win32HandleToDosFileHandle( (HANDLE)_lcreat( path, attr ) );
  73 }
  74
  75 /***********************************************************************
  76  *           _llseek   (KERNEL.84)
  77  *
  78  * FIXME:
  79  *   Seeking before the start of the file should be allowed for _llseek16,
  80  *   but cause subsequent I/O operations to fail (cf. interrupt list)
  81  *
  82  */
  83 LONG WINAPI _llseek16( HFILE16 hFile, LONG lOffset, INT16 nOrigin )
  84 {
  85     return SetFilePointer( DosFileHandleToWin32Handle(hFile), lOffset, NULL, nOrigin );
  86 }
  87
  88
  89 /***********************************************************************
  90  *           _lopen   (KERNEL.85)
  91  */
  92 HFILE16 WINAPI _lopen16( LPCSTR path, INT16 mode )
  93 {
  94     return Win32HandleToDosFileHandle( (HANDLE)_lopen( path, mode ) );
  95 }
  96
  97
  98 /***********************************************************************
  99  *           _lread16   (KERNEL.82)
 100  */
 101 UINT16 WINAPI _lread16( HFILE16 hFile, LPVOID buffer, UINT16 count )
 102 {
 103     return (UINT16)_lread((HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 104 }
 105
 106
 107 /***********************************************************************
 108  *           _lwrite   (KERNEL.86)
 109  */
 110 UINT16 WINAPI _lwrite16( HFILE16 hFile, LPCSTR buffer, UINT16 count )
 111 {
 112     return (UINT16)_hwrite( (HFILE)DosFileHandleToWin32Handle(hFile), buffer, (LONG)count );
 113 }
 114
 115 /***********************************************************************
 116  *           _hread (KERNEL.349)
 117  */
 118 LONG WINAPI WIN16_hread( HFILE16 hFile, SEGPTR buffer, LONG count )
 119 {
 120     LONG maxlen;
 121
 122     TRACE("%d %08lx %ld\n", hFile, (DWORD)buffer, count );
 123
 124     /* Some programs pass a count larger than the allocated buffer */
 125     maxlen = GetSelectorLimit16( SELECTOROF(buffer) ) - OFFSETOF(buffer) + 1;
 126     if (count > maxlen) count = maxlen;
 127     return _lread((HFILE)DosFileHandleToWin32Handle(hFile), MapSL(buffer), count );
 128 }
 129
 130
 131 /***********************************************************************
 132  *           _lread (KERNEL.82)
 133  */
 134 UINT16 WINAPI WIN16_lread( HFILE16 hFile, SEGPTR buffer, UINT16 count )
 135 {
 136     return (UINT16)WIN16_hread( hFile, buffer, (LONG)count );
 137 }
 138
 139
 140 /***********************************************************************
 141  *           DeleteFile   (KERNEL.146)
 142  */
 143 BOOL16 WINAPI DeleteFile16( LPCSTR path )
 144 {
 145     return DeleteFileA( path );
 146 }
 147
 148 /**************************************************************************
 149  *           GetFileAttributes   (KERNEL.420)
 150  */
 151 DWORD WINAPI GetFileAttributes16( LPCSTR name )
 152 {
 153     return GetFileAttributesA( name );
 154 }
 155
 156
 157 /***********************************************************************
 158  *           GetTempFileName   (KERNEL.97)
 159  */
 160 UINT16 WINAPI GetTempFileName16( BYTE drive, LPCSTR prefix, UINT16 unique,
 161                                  LPSTR buffer )
 162 {
 163     char temppath[MAX_PATH];
 164     char *prefix16 = NULL;
 165     UINT16 ret;
 166
 167     if (!(drive & ~TF_FORCEDRIVE)) /* drive 0 means current default drive */
 168     {
 169         GetCurrentDirectoryA(sizeof(temppath), temppath);
 170         drive |= temppath[0];
 171     }
 172
 173     if (drive & TF_FORCEDRIVE)
 174     {
 175         char    d[3];
 176
 177         d[0] = drive & ~TF_FORCEDRIVE;
 178         d[1] = ':';
 179         d[2] = '\0';
 180         if (GetDriveTypeA(d) == DRIVE_NO_ROOT_DIR)
 181         {
 182             drive &= ~TF_FORCEDRIVE;
 183             WARN("invalid drive %d specified\n", drive );
 184         }
 185     }
 186
 187     if (drive & TF_FORCEDRIVE)
 188         sprintf(temppath,"%c:", drive & ~TF_FORCEDRIVE );
 189     else
 190         GetTempPathA( MAX_PATH, temppath );
 191
 192     if (prefix)
 193     {
 194         prefix16 = HeapAlloc(GetProcessHeap(), 0, strlen(prefix) + 2);
 195         *prefix16 = '~';
 196         strcpy(prefix16 + 1, prefix);
 197     }
 198
 199     ret = GetTempFileNameA( temppath, prefix16, unique, buffer );
 200
 201     if (prefix16) HeapFree(GetProcessHeap(), 0, prefix16);
 202     return ret;
 203 }
 204
 205 /**************************************************************************
 206  *              SetFileAttributes       (KERNEL.421)
 207  */
 208 BOOL16 WINAPI SetFileAttributes16( LPCSTR lpFileName, DWORD attributes )
 209 {
 210     return SetFileAttributesA( lpFileName, attributes );
 211 }
 212
 213
 214 /***********************************************************************
 215  *           SetHandleCount   (KERNEL.199)
 216  */
 217 UINT16 WINAPI SetHandleCount16( UINT16 count )
 218 {
 219     return SetHandleCount( count );
 220 }